[time-nuts] Testing a LPRO RB
Ulrich Bangert
df6jb at ulrich-bangert.de
Thu Feb 16 07:55:21 UTC 2012
Mark,
> John DuBois and I did
> quite a bit of work to find a way to unwind the osc
> parameters from the available unstabilized reported data
> using SciLab on the log files, but nothing seemed to work
> reliably.
For some information on how to do that have a look at Analog Devices
application note AN-1002 and at the there mentioned US patent US 7,711,230.
Best regards
Ulrich Bangert
> -----Ursprungliche Nachricht-----
> Von: time-nuts-bounces at febo.com
> [mailto:time-nuts-bounces at febo.com] Im Auftrag von Mark Sims
> Gesendet: Donnerstag, 16. Februar 2012 01:56
> An: time-nuts at febo.com
> Betreff: [time-nuts] Testing a LPRO RB
>
>
>
> Lady Heather's osc drift rate calculation does assume that
> the temperature has been stabilized. John DuBois and I did
> quite a bit of work to find a way to unwind the osc
> parameters from the available unstabilized reported data
> using SciLab on the log files, but nothing seemed to work
> reliably. Generally the data analysis croaked because of
> things like noise and matrix singularities.
>
> Also, if you do stabilize the temperature, it is very easy
> to get the osc tempco. Just turn off the stabilization and
> see how the osc drifts as it warms up.
>
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